How To Remove Duplicates In Outlook 2016 For Mac

16-09-2021

How To Remove Duplicates In Outlook 2016 For Mac

To remove duplicates, you must remove both the outline and the subtotals first. Select the range of cells, or make sure that the active cell is in a table. On the Data tab, in the Data Tools group, click Remove Duplicates. Remove duplicate.pst files in Outlook. Before we talk about removing duplicate.pst files in Outlook, them find out what the.pst files actually are. Outlook.pst files are made of emails, contacts, journals, calendars and even notes. These are saved in ANSI and Unicode formats.

How Do I Delete Duplicate Emails In Outlook 2016 For Mac
How To Remove Duplicates In Outlook 2016 For Mac Download

Let’s look at an issue with Outlook user facing Duplicate Folders in Outlook.

Issue Description:

Duplicate folders in your Microsoft Exchange Server mailbox when view the Outlook folder list.

1st Troubleshooting that can solve the issue:

Check OWA if the issue not present; so try to recreate the Outlook profile.

Resolution:

The issue is caused by a mobile device or a third-party server application that synchronizes with the Exchange Server mailbox may unexpectedly introduce the duplication and it will be resolved by providing and instructing the customer to perform the steps outlined below.

Exit Outlook and close OWA on all workstations that are connected to the user mailbox.
Use MFCMapi to identify the duplicate folders. To do this, follow these steps:
Download MFCMAPI from http://mfcmapi.codeplex.com
Run MFCMAPI.exe.
Click on the Tools menu, then click Options.
Click to enable the following option:
Use MDB_ONLINE when calling OpenMsgStore
Click OK.
On the Session menu, click Logon.
If you are prompted for a profile, select your profile name, and then click OK.
In the top pane, locate the line that corresponds to your mailbox, and double-click it.
In the navigation pane (left-side pane), expand Root Container, and then expand Top of Information Store.
To identify the duplicate folder, click one of the duplicate folders on the left pane. In the right pane, locate the Value column for the PR_CREATION_TIME property. Compare this value to the duplicate folder with the same name. The duplicate folder will have a newer creation date and time. Work with one pair of folders at a time (for example, start with the two Calendar folders that appear).
Use MFCMAPI to copy any items from the duplicate folder to the original folder. These are items created after the duplicate folders were created. This can include email that was received in the Inbox, Contacts that were created, Calendar appointments that you scheduled and meetings that you accepted, follow these steps:
In the left pane of MFCMAPI, double-click on the duplicate folder, which has the newer creation date and time.
On the window that opens, click on the top pane, then press CTRL + A to select all items.
If no items appear in the top pane, the folder is already empty; skip to step 7.
Click on the Actions menu, then click the Copy Messages command.
Close the folder window, then double-click on the original folder, which has the older creation date and time.
Click on the Actions menu, then click the Paste Messages command.
Click to enable the MESSAGE_MOVE checkbox, then click OK.
Close the folder window.

In MFCMAPI, switch back to the duplicate folder, which is now empty. Use MFCMAPI to delete it.
Right-click the duplicate folder, and then select Delete Folder.
Click to enable the Hard Deletion option, and then click OK.

Repeat steps 2 through 4 for other common Outlook folders (Contacts, Deleted Items, Drafts, Inbox, Journal, Junk E-mail, Notes, Sent Items, and Tasks).

Close MFCMAPI.

Press WinKey+R to bring up the Run dialog box then input “C:Program FilesMicrosoft OfficeOffice12OUTLOOK.EXE” followed by a space and then the switch /resetfolders as below:

“C:Program FilesMicrosoft OfficeOffice12OUTLOOK.EXE /resetfolders ”

Ratish Nair

Microsoft MVP | Office Servers and Services

Team @MSExchangeGuru

For many organizations and users, MS Outlook is the primary email client for communicating with their clients and partners. And, when it comes to trust and performance, Outlook has no replacements and workarounds. It is a highly professional and business-oriented email client for all your needs like emailing, calendaring, contact management, etc.

At times, you may face the issue of removing duplicate items in Outlook. The issue of duplicate contacts leads to storage issues and degraded performance. It overloads Outlook and may cause an application crash.

Instant Solution

Download Kernel for Outlook Duplicates Remover tool to quickly detect and remove duplicate items from your Outlook PST mailboxes.

Unfortunately, there is no undo process to remove duplicate contacts instantly. Hence, to resolve and remove duplicate contacts in Outlook we should first know the reasons behind the issue so that it can be prevented in the future.

Reasons behind Duplicate Contacts in Outlook 2016

The common reasons due to which duplicate contacts are created in Outlook 2016 are listed for you to understand the scenarios and avoid repeating them.

Message dragged to Contacts folder: If the email messages are dragged to Contacts folder, a new contact gets created in Outlook automatically. It is a major cause of duplicate contact creation.
Same person with different email accounts: Another reason for duplicate contact is when one user uses different email accounts with the same name. So, a new contact will be created for the same person.
Contacts Synchronization: To find people easily and keep everything synchronized, you synchronize contact of Outlook with your laptop or mobile device and at times with social platforms like Facebook messenger, LinkedIn, Twitter, etc. which ultimately leads to duplication of contacts.
Multiple address books on Exchange: This is a scenario with many organizations that maintain several address books on their Exchange Server.

Effective Methods to Remove Duplicate Contacts in Outlook 2016

The methods described here apply to Outlook 2019, Outlook 2016, Outlook 2013, Outlook 2010, Outlook 2007, and Outlook for Office 365

Method 1: Delete Contacts One by One (if they are less in number)

You can easily delete your contacts one by one manually if they are less in number.

STEP 1: Launch Outlook, look at the bottom left of the Outlook window to find the highlighted People icon and click on it.

STEP 2: Look for Current View group in the top horizontal ribbon of Outlook and click on Phone.

Please note: You can simply use this method to scan contacts to find duplicates.

STEP 3: Now, hold CTRL key and click on duplicate contacts one by one and press Delete.

Method 2: Export and Import Duplicate Contacts (if they are large in number)

You cannot delete thousands of duplicate contacts one by one as it will eat a lot of time and it is a very complex task to perform. Hence, the best way is to use export all the contacts to a new folder with the help of Outlook feature that excludes duplicates while exporting. And, once exported you can import the new one to Outlook
instantly.

Follow the step one by one as mentioned.

STEP 1: Start Outlook and click People in the lower left corner of the Outlook window.

STEP 2: You will see Contacts under My Contacts; simply right-click and select New Folder.

STEP 3: Enter the name of the new folder, say ‘Remove Duplicate Contact.’

STEP 4: Go back to the original Contact folder and click to expand contacts list, select all contacts using CTRL + A, and drag the contacts to the ‘Remove Duplicate Contact’ folder.

Please note: When you drag and drop or move contacts to a new folder, the main contacts folder becomes empty.

STEP 5: Now, go to File >> Open & Export >> Import/Export

STEP 6: Select Export to a file from the list under Choose an action to Perform and click Next.

STEP 7: Next, choose Comma Separated Values under Create a file of type and click Next.

STEP 8: Select the Remove Duplicate Contact folder and click Next.

STEP 9: At the end, click Browse for the desired location to save the file, click Next and click Finish.

Steps to Import Contacts back to Outlook

STEP 1: In Outlook, click File >> Open & Export >> Import/Export.
STEP 2: Now, choose Import from another program or file from the list and select Comma Separated Values.
STEP 3: Click Browse and select the location where you saved the exported file. Also, choose Do not import duplicate items from options and click Next.
STEP 4: Lastly, select the default Contact folder as a destination for importing and click Finish.

Automated Method to Remove Duplicate Contacts in Outlook

If you are looking for a quick method to clean the duplicate contacts in Outlook, you can simply opt for an automated professional third-party tool, i.e., Kernel for Outlook Duplicates Remover. The tool works fabulously to remove duplicate items from Outlook data files which include emails, contacts, calendar, etc. It has a very interactive and easy-to-use graphical user interface.

Final Words

How Do I Delete Duplicate Emails In Outlook 2016 For Mac